The MIL-DTL-38999 Series I connectors offer reliable connectivity in harsh environments, featuring up to 128 contacts in an environmentally sealed insert. With an operating temperature range of -65 °C to 200 °C, these connectors are ideal for demanding applications. Available in various shell sizes and insert arrangements, they accommodate M39029 rear release crimp contacts, ensuring secure connections. Constructed with high-strength aluminum shells and offering multiple plating options, including cadmium-free finishes, these connectors provide durability and versatility. The MIL-DTL-38999 I connectors are designed for wall mounting, with options for front wall mount, rear wall mount, and jam nut receptacles, all with RFI grounding plugs. Suitable for military and industrial use, these connectors are essential for maintaining reliable electrical connections in challenging environments.